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Solder Alloy 124 vs. AWS E307

Solder alloy 124 belongs to the otherwise unclassified metals classification, while AWS E307 belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is solder alloy 124 and the bottom bar is AWS E307.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 17
200
Elongation at Break, % 46
34
Poisson's Ratio 0.44
0.28
Shear Modulus, GPa 5.8
78
Tensile Strength: Ultimate (UTS), MPa 27
660

Thermal Properties

Latent Heat of Fusion, J/g 24
290
Melting Completion (Liquidus), °C 330
1420
Melting Onset (Solidus), °C 320
1370
Specific Heat Capacity, J/kg-K 130
480
Thermal Conductivity, W/m-K 22
15
Thermal Expansion, µm/m-K 29
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 7.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 70
17
Density, g/cm3 11
7.8
Embodied Carbon, kg CO2/kg material 4.1
3.5
Embodied Energy, MJ/kg 68
49
Embodied Water, L/kg 470
160

Common Calculations

Stiffness to Weight: Axial, points 0.83
14
Stiffness to Weight: Bending, points 7.6
25
Strength to Weight: Axial, points 0.65
24
Strength to Weight: Bending, points 1.8
22
Thermal Diffusivity, mm2/s 15
4.1
Thermal Shock Resistance, points 3.9
17

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.12
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.040 to 0.14
Chromium (Cr), % 0
18 to 21.5
Copper (Cu), % 0 to 0.080
0 to 0.75
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
59.6 to 69.2
Lead (Pb), % 97.2 to 98.2
0
Manganese (Mn), % 0
3.3 to 4.8
Molybdenum (Mo), % 0
0.5 to 1.5
Nickel (Ni), % 0 to 0.010
9.0 to 10.7
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.8 to 2.2
0
Zinc (Zn), % 0 to 0.0010
0